Hopper.



B. I. BASBLEB.

HOPPER.

AIHAH'MTXOI I'll-3D I'll-X. ll.

Patented m. 15,1910.

A A A A A A 'nwmmn'maum-vmm.

' others. it found, in practice, that the pu vrevised material does not settle umfonnly creating a constant air presauro throughout State of Illinois, have invented certain new of the hop r, the a dean of raid hole or opena come loosened and detached an 3T Avamm: mar

UNITED STATES PATENT OFFICE.

man! I. m OI CHICAGO. ILLINO. 488101103 '10 O. V nnvmu & comm. OI OHIOLOO, ILLINOIS, A CORPORATION OI ILLIKOII.

HOP!

lpeetseattoa of Letters Iateat. Patented Feb. 15, 1910.

Application filed l'ebruary 1. 1809. Serial R0. 418.87.

To all whom it may concern: so constructed and arranged that materiel lie it known that I, Enwis M. Baasuzn, I may be fed therefrom contmnousl '-and unia citizen of the United States, and a resiformly, unaffected by masses of t e pulverdent of Chicago, in the county of Cook and ized material becoming dislodged and falling into the discharge 0 ning, in the manand useful Improvements in Hoppers, of i ner heretofore describe which the following is a specification. To this end my invention consists in prolhis invention relates to hoppers and reriding a vent within the hopper supported lates particularly to hoppers designed and i tt ljlttt'lll to tho disehar opcni creof, adapted for containing pulverized tnutei whereby until an uccumu ating in he lower rial, as pulverized fuel,-coal, coke, and the 3 end of the topper may escape :without crelilte,-provided with a discharge opening in i atmg any appreciable pressure m the appsits lower end through which the contents! ratua connected to the discharge opening of 1 thereof are discharged and delivered-to the i said hopper.

int of use, as the burners of a furnace,

iln or the like, usually by means of a suitable screw conveyer. Where pulverized coal is used for fuel, it is usually delivered into a suitable hopper from which it is discharged and delivered to the burners by means of a auitable conveyor, as a screw eonveyer, the casing of which is in open communication with a suitable discharge openin in the bottom of the hopper, thesides of t to hopper usually declimng toward said discharge opening so that the pulverized material will settle through the discharge openin by gravity. Owing, however. to .the pecu mr character of home ulverised material, coal, moon The invention also consists of the various other features and details of construction hereinafter described and claimed.

in the accompan my invention is fit 1 ustrat -Figure 1 is a vertical sections view of a hopper, the discharge opening of which communicates with the casing of hopper being provided with my improved a venting apparatus 0 my invention, se rated from the hopper. in 8 is a top p an view thereof. Fig: 4 is a ra entary sectional view thereof on an en arged scale; and Fig. iis a bottom plan view of the discharge erd of the hopper showing my improved venting apparatus in ition.

Referring now to the drawing 1 designates a hopper of usual or approved construction, such as is commonly used for containing pulverized material, as ulverisod Mal and regularly at all points of the hopper, but tends to haul: up or lodge at the sides of the hopper, a hole or v-nmg forming in the bed? of tho materia contained in the or the'like. Formed in the tom of mid hopper directly above and of about the name hopper is a discharge openi 2 which, as aim as the diachar opening in the bottom shown, is in open communica ion with the casing 3 of a screw copra er ads ed for discharging the pulver: material from mid ho rpm and elivering the same to the mint 0 use. as to the burners of a furnace, iln, or the like. The sides of tho'hopper 1 decline toward the dischar opening 2, so that the material contain in said oppcr will tend to settle b gravity toward said discharge opening. )wmp, however, to the peculiar character and an ion of some pulverized materials, as, for exam lo, pulverized cool, it is found that the 0 not settle uniformly over all parts of t e hopper but lodge around the sides of the ho per,iea ving a hole about equal in star the discharge opening of the hopper, extending down through the contents offln hopper,

ing thus elined b the lodged fuel being almoat vertical. A so, it is found that, at intervals, considerable quantities of 'the polverized material around said- 0 nin befal into the discharge openi in-aolid masses, which operate to compress t e air in front thereof,

the conveyor and the burners, causiu the burnera tobolch, thus seriously inter erin with the uniform action of the burners an aluo, causing a considerable waste of fuel.

The object of the resent invention is to overcome the fore om objectionable feutares and to ram e a 0 per adapted for containing feeding pu vermd material,

inqldrawin in which.

a screw conveyor, and;

venting apparatus. Fi 2 is an end View 0f the aidaapf which are almost vertical. In the drawing, the dotted line 4 indicates approximately the aide of the opening which will be formed through the material containad in the hop At intervals, also sections 9! the pn verized material aroun the o 4 become detached and fall into the iacharge opening 2, which operates to charge opening r ma raciah e m 8!- below ouch dislodged mass of material, crea constant excessive pressure in the connections to said discharge opening, as the conveyor 8 and the burners, not shown, which interferes with the uniform operation of and burners and causes them to operate irregularly and imperfectly. To overcome these objectionable features,..I provide a vent for the hopper adjacent to the distherefrom, whcreb any air accumulating in the bottom of said liopescape without creating any appressure in the connections to said ischarge opening} In the prefers 16 construction shown, a vent of in invention comprises a hollow structure 5 ocated within the hopper 1 adjecant to the discharge opening 2 in such postf nely, the

tioli that an unobstructed s ace of desired size will be left around sai structure 5 to grovide a desired rate of feed thcrcthrough.

or put of convenient reference, the hollow ructuro a will hereinafter be rerod to aa a hood. Said hood 5 may be mafia-o! an auitable material, desirable matarlal for t is purpose being galvanized sheet iron. To provide for air entering the hood .1

bottom thereof is preferably on- "13 open. Preferably, also, said h 5 is pro dad with holes or openings 6 in its side walls, through which the air accumulating in the lower end of the be per 1 ll't ly enter aid hood 5. To prevantt ulverimd matkial from ontorin the hood the openings 6 are covered b at ma be designated as balaa 7 ing of of aheet metal secured to the aidea of the mod 5 above said holea or o inga, aaid atri being shaped to Manet 8 and 0, o w ich the sections 8 aatand outwardly from the hood and the seciii 'ter laid hood o'li around the hood 5, the biulle 7 time) downwardly even with or slightly be- -lowtlia lower sides of the holes or o iiinga 6 M thereby, rel lively, thus ornii-ng 10 between aai ballles 7 and the sides o lb. hood 0 at their lower aides, which willoparate prevent the material contained in the hopper from entering said holaa or open t will permit air to en- In the prelerablz construction shown, the hola'a or openings 0 are arran ed in several rows or series each extcm. ing entirely for each row olLa'ariea of holes or openings being likewise continuous around-said hood. To prevent the matarialeontained in the hopper from the air contained in the opening 4 re era ly inclined at a stec agrees to the vertical. As is own at 11, the

to the t. iecliargeopcnmg led in on the hood 5, the top thereot in angle, say 15 top of said hood declines both ways from its longitudinal center. To provide for the escnpe of any air underpressure accumulating in the hood 5, said hood is provided with a discharge opcnin so disposed that it will at all times be uiio islructcd by the material contained in the hopper. In the 'ii'cferiiblo construction shown, air is adapte to escape from so id hood 5 through a pipe which coininuniciites with the to of said hood and which extends upwardly above the normal level of the inuterialin the be :per 1. To prevent pulverized material rom being lowii into the room, when the top (if the hopper is open, and to prevent objects from falling into said pi which might. clog the sonic, the upper mm of said pipe 12 is preferably bent over, as shown at 13, so that the discharge opening therefrom will be directed downwardly into the hopper l. 4

The top ofthe ho ipor l is usually closed, as by a cover 14. he hood 5 may be supported in position in an suitable or desired manner. In the pre erablcconstruction shown, said hopper is suspended from rods lfi,'the lower ends of which are secured in the top of said hood, and the upper ends to the cover 14 of the hopper. To provide for varying the operative size of the discharge opcnin 2 from the hopper 1, the rods 15 are irol'era ily connected to the cover 14 of the iopprr in such manner that the ition of said hood may be adjusted vertically. As shown. the up 1 ends of said rods 12' are screw thread for a considerable distance and pass freely through holes or o ienings formed in the hopper cover H, and ll lmltdfitl to the upper em 5 thereof above said cover and adapted to rest thereon are nuts if.

i. A hopper and a vent therefor said vent comprising a hood constructed Itlltl arranged to be supported within snid hop r adjacent to the (ll-Stlilll c opening tlicreo said hood beimaprovid for t e admission of air thereto, and wi an opening or openin ii for the eaca of air therefrom, subatantia y as dcsci'i 2., A hopper and a vent therefor said vent comprising a hood constructed and arranged to be sil iported within said hop r adjacent to the d ischar e opening thereo said hood bcin pi'ovid with an opening or o nings for t io udmisaion of air thereto an a pipe which communicates with said hood provided with n dischar o ening located above the designed level 0 material in the hopper, substantially as described.

ll. A hopper and a vent therefor said vent comprising a hood constructed and arranged to be en ported within said hop r adjacent tlicreo said hood lit";

' ted t tereto, an mtantially an dcaerihed;

eomprisiug a hood being provided won an opening or openings t for the adtuis-ioi. oi air thereto, amt a pipe which communicatea with said hood, the upper endof which i open, xalmtautially tin described.

l. hopper and a \t'ltt therel'ntasaid rent comprising a hood constructed and arranged to he sup'pta'tcdwithin said hopper adjacent to the discharge opening thereof. aid hood being provided with an opening or o ieningz-i for the tttilltir-riitili of air thereto, am a pi e which cotmnunicates with said hood provided with an opening directed downwardly within said hopper, substantially as de- J scribed. I

5. A hopper and a vent therefor said rent i comprising a hood constructed and arranged l to be so ported within said ltopper adjacent to tlte t tscharge opening thereof, said hood bein irovided with an opening or openings i [or t tc tlt'itilifla'iult of air thereto and with a direharge opening the top of said hood being downwardly tnelinet substantially as described.

ti. hopper and a rent therefor, said vent comprising a hood supported within said 3 hopper adjacent to the. dischar c opening thereof the bottont of mid hood 'ing 0 Jen and said hood beiu provided with a t iachat openin for t ic escape of air admit- I 7. hopper and a vent therefor, said vept supported wtthm htttti hopper ad acent to the discharge opening i 1 thereof said hood being provided with opeuings in tttt side walls through which air may enter said hood and with a diselaoge o )enhug for the cacape of air therctrtun, and mfties which project over said holes or openings i at a distance front the sides of said hood forming spaces contnmnicating with said 1 holes or openings, the tops and ttidea of, which are closed and the bottoms of which are open, substantially I8 described. f 8. A hopper and a vent therefor, and vent i eompriuinp it hood= supported within said hopper at ncent to the duelntr'e opening thereof. thehottotu of sa d hood icing open t and said hood bein provided with oluminbn in its side walls am through which air may i enter said hood, and with a diachargc 0 at 1 ing for the escape of air therefrom, and ties which project over said holes or openings at a distance from the sides of said hood. vt'oruiing' .-p:tt communicating with said holes or openings, the tops and sides of which are 'itist'ti and the bottoms of which are open, -uhstantiall v as described.

9. hopper provided with a discharge 7 opening and a vent therefor, said vent com-i prising a hood. .-npported within said hopper adjacent to the discharge opening thereof,

said hood being irnrided with an opening or openings for the admission of air thereto and with a discharge opening, the means for supporting said hood being so constructed and arranged that said hood will be adjustable to vary the operative nizc of the discharge o u-niug, substantially as described.

10. A hopper provided with a discharge opening am a vent therefor, said vent comprising a hood sup )ot'tctl within said hopper adjacent to the discharge 0 iening thereof.

-said hoodheing provided wit t an opening or openings for the admission of air thereto,

and with a discharge opening, the means for snp mrting said hood consisting; of rode, the

lower man of which are sceurct 0 said hood, and a iixed support to winch the upper ends of said rods are connected, sttitsittttilflliy as described.

it. hopper provided with a discharge opening tlllt a vent therefor, naid rent 00inprieing a hood an iported within said hopper adjacent to the t ischarge opening t'ltcreo said hood being provided with an oiening or openings for the admission of air t wrote, and with a d scharge opening, the means for suppm'tinf'g said hood consisting of rods the lower em a of which are connected to said hood, a listed support provided with holes or openings througt winch the rods for supporting said htmdpash, the upper endaofsttd rods being screw t ireaded for a considerable diatauce, and nuts threaded to the end: of said rods above said fixed suppott, substan- 1 tially as described.

that I claim the foregoing my aigntttureu n ill EDWIN 'M. BASSLER.

\\'itnesses:

K. A. Cofl'nnnbo, (i. M. Euartomt. 

